security: use mmap_min_addr indepedently of security models

This patch removes the dependency of mmap_min_addr on CONFIG_SECURITY.
It also sets a default mmap_min_addr of 4096.

mmapping of addresses below 4096 will only be possible for processes
with CAP_SYS_RAWIO.

Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: Eric Paris <eparis@redhat.com>
Looks-ok-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 149581fb48ab..45bd711a242e 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1237,7 +1237,6 @@ static struct ctl_table vm_table[] = {
                 .strategy       = &sysctl_jiffies,
         },
 #endif
-#ifdef CONFIG_SECURITY
         {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "mmap_min_addr",
@@ -1246,7 +1245,6 @@ static struct ctl_table vm_table[] = {
                 .mode           = 0644,
                 .proc_handler   = &proc_doulongvec_minmax,
         },
-#endif
 #ifdef CONFIG_NUMA
         {
                 .ctl_name       = CTL_UNNUMBERED,